EP4177410B1 - Betonschacht mit rfid-etikett, verfahren zum lesen eines rfid-etiketts eines solchen behälters und verfahren zur herstellung eines solchen behälters - Google Patents

Betonschacht mit rfid-etikett, verfahren zum lesen eines rfid-etiketts eines solchen behälters und verfahren zur herstellung eines solchen behälters Download PDF

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Publication number
EP4177410B1
EP4177410B1 EP22204749.0A EP22204749A EP4177410B1 EP 4177410 B1 EP4177410 B1 EP 4177410B1 EP 22204749 A EP22204749 A EP 22204749A EP 4177410 B1 EP4177410 B1 EP 4177410B1
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EP
European Patent Office
Prior art keywords
rfid tag
trench
concrete
tank
concrete tank
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EP22204749.0A
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English (en)
French (fr)
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EP4177410A1 (de
EP4177410C0 (de
Inventor
Lofti BATEL
François PHILIPPON
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RECO
Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Reco
Commissariat a lEnergie Atomique CEA
Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Publication of EP4177410B1 publication Critical patent/EP4177410B1/de
Publication of EP4177410C0 publication Critical patent/EP4177410C0/de
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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories

Definitions

  • the invention relates to a concrete tank fitted with an RFID tag, to a method of reading an RFID tag in such a tank and to a method of manufacturing such a tank.
  • the document US 7,777,628 proposes installing an RFID reader on top of a concrete tank. It is also known from documents KR101331873B1 , KR200437024Y1 And KR20200005205A to install an RFID tag in the cover of a concrete tank. A hole is formed in the external face or in the internal face of the cover and an RFID tag encapsulated in a protective element is mounted on the cover. Once the cover is formed with dry concrete, it is also proposed to form a hole in the cover to insert the RFID tag. All of these solutions suggest identifying a concrete tank by means of its cover. Unfortunately, the hoods age more quickly and/or are more often damaged, which limits the benefit of an RFID tag attached to the hood. To follow a concrete tank, following the hood is not a good solution.
  • the document US 8,149,121 proposes to encapsulate an RFID tag in a protective element made of polyamide resin reinforced with glass fibers.
  • the document US 8,807,873 describes a process for repairing a wall of a tank. The process involves depositing a resin covering layer inside the tank in order to repair it. These solutions are not interesting because they require making the tank out of concrete, drying the concrete then covering the internal face of the tank with a resin or another layer, which requires two successive operations. This configuration is very expensive.
  • An object of the invention consists of providing a concrete tank which ensures the correct reading of an RFID tag, preferably up to approximately 5 meters deep and while remaining simple to implement.
  • the concrete tank is notable in that it includes an RFID tag enclosed in a liquid-tight radome, the radome being mounted flush with the bottom or embedded in the bottom, the RFID tag having at least one antenna disposed at a lower depth 100 mm from the bottom surface.
  • the bottom of the radome is covered by a metal layer forming a reflector, the reflector being separated from the opening of the cover by at least one antenna.
  • the direction of the antenna is perpendicular to the first direction.
  • the RFID tag comprises a symmetrical antenna with two planar strands, the respective directions of which define an antenna plane perpendicular to the first direction.
  • the bottom defines at least one trench.
  • the RFID tag is outside the trench and is offset by a first distance relative to a side edge of the trench of less than 40 mm, the trench having a depth at least equal to 20 mm and having first and second opposite ends.
  • the at least one trench is a trench intended for the circulation of a liquid and the first and second opposite ends open onto two separate through orifices in the side wall.
  • the RFID tag is arranged respectively at first and second distances from the first and second ends of the at least one trench, the first and second ends opening into two distinct portions of the side wall, the ratio between the first and second distances being between 0.8 and 1.2.
  • the at least one trench is a rectilinear trench extending from one edge of the bottom to the other.
  • the direction of the antenna is parallel to the longitudinal direction of the trench, the first distance being between 5 mm and 40 mm.
  • At least one trench is curved.
  • the RFID tag is placed in the concave part of the at least one trench.
  • the RFID tag is oriented so that the direction of its antenna is parallel to a tangent to the side edge of the trench, the first distance being between 5 mm and 40 mm.
  • the RFID tag is equidistant from the two ends of the trench.
  • the invention also relates to a method of manufacturing a concrete tank which is simple to implement and which makes it possible to reuse existing molds while ensuring good reading of an RFID tag. We tend to resolve this problem by means of a process for manufacturing a concrete tank according to any of the preceding configurations, comprising the steps according to independent claim 12.
  • the invention also relates to a method for reading an RFID tag present in a concrete tank which is simple to implement. We tend to solve this problem by means of a method of reading an RFID tag, comprising the steps according to independent claim 11.
  • FIG 1 illustrates a concrete tank 1 which is provided with an RFID tag 2.
  • the concrete tank 1 comprises a bottom 3 made of concrete as well as a side wall 4 extending from the bottom 3 in a first direction Z to form a receptacle.
  • the side wall 4 is made of concrete and it extends over a height of at least one meter from the bottom 3.
  • the bottom 3 of the concrete tank 1 is the wall which extends mainly or exclusively perpendicular to the first direction Z.
  • the side wall 4 extends exclusively or mainly in the first direction Z.
  • the RFID tag 2 is a passive tag, that is, a tag that receives energy from incident electromagnetic radiation and uses that energy to power an electronic device and generate outgoing electromagnetic radiation.
  • the height of the side wall is less than 6 meters.
  • the concrete tank 1 is mainly formed by concrete, that is to say the majority of which by weight is formed by concrete.
  • the bottom 3 is preferably free of reinforcement.
  • the side wall 4 is preferably free of reinforcement.
  • the RFID label 2 is placed in the bottom 3 of the tank 1 in an area where the quantity of concrete is sufficient (in particular the thickness) to support the installation of the RFID label without degrading the mechanical performance.
  • the installation of the RFID label 2 in the bottom of the tank 1 also makes it possible not to modify the manufacturing process too much and thus limits the additional cost of this technical solution.
  • the bottom 3 of the tank 1 can have any shape, for example circular, square or rectangular perpendicular to the first direction Z. The RFID tag 2 cannot be removed from the concrete tank 1.
  • the concrete tank 1 is closed by a cover 5 which has a removable or pivoting cover (not illustrated).
  • the cover 5 can be made of concrete, metal or plastic.
  • the information from the RFID tag 2 is read by means of an RFID tag reader 6 which interacts with an electronic device 7 (RFID chip) and at least one antenna 8 of the RFID tag 2.
  • the electronic device 7 and the at least one antenna 8 are preferably mounted on a support 9.
  • the RFID tag 2 comprises an electronic device 7 associated with at least one antenna 8, which is preferably a dipole antenna.
  • the antenna 8 preferably comprises two symmetrical strands which extend from the electronic device 7 in an antenna direction Y.
  • the two symmetrical antenna strands 8 are separated by the electronic device 7.
  • the electronic device 7 and the two strands antenna 8 can be mounted on the support 9.
  • the RFID tag 2 can have at least one piece of information representative of the concrete tank. This information is chosen from the date of installation of the tank, the date of manufacture of the tank, the configuration of the tank, the dimensions of the tank, etc.
  • the RFID tag 2 has an antenna 8 which extends in an antenna direction Y.
  • the antenna direction Y is perpendicular to the first direction Z.
  • the antenna direction Y is parallel to the bottom 3 of the concrete tank 1 or substantially parallel to the bottom 3.
  • the antenna 8 is advantageously planar.
  • the plane AA defined by the planar antenna 8 is perpendicular to the first direction Z.
  • a first option is to place the RFID tag 2 in the side wall 4 near the top of the concrete tank 1, near the cover 5.
  • This technical solution is not satisfactory because it requires a significant modification of the manufacturing process of the concrete tank 1.
  • the attenuation of the electromagnetic signal remains significant, which makes it complicated reading the signal without introducing the reader 6 into the tank 1.
  • the cover 5 being distinct and independent from the rest of the concrete tank 1, the measurement becomes dependent on the configuration of the cover 5 used, in particular when opening the cover 5 is off-centered as shown in figure 1 .
  • This solution is not acceptable.
  • the height is measured in the first direction Z from the wall forming the bottom 3 to the opening of the cover 5.
  • the RFID tag 2 is placed near the top of the concrete tank 1 in an area projecting from the side wall 4.
  • the technical solution is not satisfactory because it requires a significant modification of the manufacturing process of the concrete tank 1 and in particular of the mold which leads to a significant additional cost.
  • an RFID tag 2 installed in the bottom 3 of the concrete tank 1 presents satisfactory attenuation of the electromagnetic signal.
  • the electromagnetic signal emitted is compatible with a reading outside the concrete tank 1, in the immediate vicinity of the opening of the concrete tank 1.
  • the reading can be carried out with a reader 6 which is located between 50 cm and 1 m at above the opening of the cover 5, for example with a reader 6 held at arm's length with an operator standing or slightly leaning.
  • the attenuation value is substantially identical to that measured for an RFID tag 2 placed in the top part of the side wall 4 and projecting inside the concrete tank 1. It is particularly interesting to install the tag RFID 2 in the bottom 3 of the concrete tank 1 because this has a minimal influence on the mechanical performance of the concrete tank 1. This also makes it possible not to modify too much the manufacturing process of the concrete tank 1. The installation of the RFID tag 2 in the bottom of the tank 1 makes the reading less sensitive to the configuration of the cover 5.
  • the RFID label 2 is installed in a radome 10 which is liquid-tight.
  • a liquid-tight radome 10 makes it possible to protect the RFID tag 2 from the external environment and in particular from the components of the concrete or from the liquids and sludge which circulate in the tank 1.
  • the radome 10 forms a closed receptacle which encloses the electronic device 7 and the antenna 8 at a distance from the concrete.
  • the cover of the radome 10 is made of a dielectric material which is transparent and allows waves to pass in the wavelength range of the signal received and coming from the RFID tag 2.
  • the material of the radome 10 is electrically insulating.
  • the radome 10 is made in several parts which are fixed to each other so as to define a waterproof housing which contains the RFID label 2.
  • a waterproof housing which contains the RFID label 2.
  • the entire radome 10 is made of ceramic and preferably of alumina.
  • the cover, the rest of the housing or the entire housing can be formed from a polymer material.
  • the radome 10 is made for example of Acrylonitrile Butadiene Styrene (ABS).
  • a film of air or another gas or gas mixture is preferably present between the antenna 8 and the concrete inside the radome 10.
  • the gas pocket between the antenna 8 and the concrete makes it possible not to attenuate electromagnetic radiation to facilitate its propagation to the top of the concrete tank 1 and through the opening of the cover 5.
  • a resin is introduced into the radome 10 to encapsulate the antenna 8 and the electronic device 7.
  • the radome 10 is embedded in concrete, that is to say completely surrounded by concrete. It is advantageous for the RFID tag to be embedded in the bottom 3 at a depth of between 0 mm and 100 mm, preferably between 5 mm and 100 mm, preferably less than 80 mm and even more preferably less than 50 mm.
  • the thickness of concrete to be passed through by the electromagnetic radiation between the antenna of the RFID tag 2 and the interior of the concrete tank 1 is less than 40 mm, preferably between 5 mm and 40mm.
  • the depth of insertion of the RFID tag 2 and the thickness of concrete covering the RFID tag 2 are measured in the first direction Z.
  • the radome 10 is installed in the bottom 3 of the concrete tank 1 and the radome 10 has a face which is not covered by the concrete so as to facilitate the propagation of the signal.
  • the radome 10 it is preferable to prevent the radome 10 from projecting from the bottom 3 of the tank 1. It is advantageous to provide that the radome 10 has a face mounted flush with the internal surface concrete.
  • the top of the radome 10 forms a depression in the bottom wall 3 of the tank 1. This configuration nevertheless tends to retain sludge and liquids, which is detrimental to good circulation of the electromagnetic signal.
  • the depth of insertion of the antenna 8 inside the radome 10 has a reduced effect on the gain and impedance of the transmitted signal. It is therefore advantageous to install the radome 10 flush to reduce the influence of the depth of insertion of the antenna 8 relative to the surface of the tank intended to receive the flows.
  • the RFID tag 2 has at least one antenna 8 arranged at a depth of between 5 mm and 40 mm relative to the surface of the bottom 3.
  • the antenna does not project from the bottom 3 of the tank 1 to avoid increased deterioration, nor pressed too deeply which results in excessive weakening of the signal.
  • the radome 10 In order to facilitate the installation and maintenance in position of the radome 10, it is advantageous for one or more side walls of the radome 10 to have projecting elements. Once the concrete has hardened, the radome 10 can no longer be separated from the concrete tank.
  • the radome 10 is a cylinder closed at its two ends, for example a tube of circular section closed at its two ends.
  • the external diameter of the radome 10 can be 3 cm.
  • the radome 10 is a block, for example a straight block.
  • a radome 10 having any shape is also possible, for example a parallelepiped. It is advantageous to increase as much as possible the dimension of the radome 10 perpendicular to the plane AA defined by the antenna 8. A compromise must be found between the bulk of the radome 10 which can modify the mechanical performance of the bottom 3 of the tank in concrete 1 and improvement of the propagation of the electromagnetic signal.
  • the concrete tank has a side wall 4 having a significant height, at least 1 meter, preferably at least 2 meters, or even 5 meters.
  • the great height of the side wall 4 makes the reception of the signal by the RFID tag 2 as well as the reception of the signal emitted by the RFID tag 2 to the RFID tag reader 6 more complicated.
  • results acceptable measurements were obtained with an RFID tag placed in the bottom 3 of a concrete tank 1 having a side wall 4 five meters high and with a reading device 6 located outside the concrete tank 1, the cover being open.
  • the RFID tag 2 is provided with a reflector 10a made of metallic material.
  • the reflector 10a is separated from the opening of the tank 1 by the antenna 8 so that the electromagnetic signal arrives with a better signal/noise ratio to the RFID tag reader 6.
  • the reflector 10a can be formed by a layer of metal on one face, for example the lower face of the radome 10 which encapsulates the RFID tag 2.
  • the reflector 10a can be formed by a metal plate whose thickness is less than 5 mm.
  • the metal plate can be glued, formed by metallization of the case or by any other suitable technique.
  • the metal can be aluminum.
  • the use of a reflector 10a makes it possible to reduce the thickness of the radome 10 receiving the RFID tag 2. It is advantageous to have a plane reflector 10a, preferably parallel to the plane defined by the antennas, and even more preferably formed on a flat bottom of the radome 10.
  • the RFID tag 2 is attached or formed on the cover of the radome 10.
  • the cover having the RFID tag 2 is attached to the rest of the radome 10.
  • the antenna 8 of the RFID tag 2 is located as far away as possible from the reflector 10a in order to promote obtaining better gain for the transmitted signal.
  • the antenna 8 is placed in the half of the cavity which is furthest from the reflector 10a, in a direction perpendicular to the plane defined by the reflector 10a.
  • a simple way to increase the gain of the signal emitted in the direction of the opening of the tank 1 is to increase the surface area of the reflector 10a.
  • the surface of the reflector 10a is at least equal to the bulk surface of the RFID label 2, that is to say the total surface considering the label as a solid surface from one end to the other. Even more preferably, the surface area of the reflector 10a is at least equal to 1.15 times the overall surface area of the RFID label 2, or even 1.3 times the overall surface area of the RFID label 2.
  • the radome 10 is in the form of a cylinder closed at its two ends, and more preferably in the form of a straight block. It may be particularly advantageous to provide that the lower face of the radome 10 extends beyond the side walls so as to define a peripheral step which goes completely around the radome 10. It is then preferable that the reflector 10a covers the entire surface of the face lower of the radome 10 which makes it possible to have a larger reflector plane 10a and to define a step which blocks the radome 10 in the concrete.
  • the reflector 10a is advantageous to cut the reflector 10a into two distinct surfaces having identical or substantially identical areas and to connect these two surfaces by an impedance which is configured to introduce a complex impedance value of preferably at least equal to 1nH.
  • the impedance can be formed simply by a metal pad connected to the two metal surfaces.
  • the central third of the bottom 3 corresponds to the third of the surface of the bottom 3 which is in the form of a circle extending from the center of background 3.
  • the center can be the center of a circle, or the intersection of the diagonals of a quadrilateral or another regular polyhedron or the barycenter of the section.
  • substantially flat we mean a bottom 3 whose center is slightly higher or slightly lower than the edge of the bottom 3.
  • the bottom can also be corrugated or it can have another form of texturing.
  • the flat or substantially flat bottom 3 is preferably perpendicular to the first direction Z.
  • the RFID tag 2 is offset from the center of the bottom 3 and the antenna direction Y is arranged parallel to the surface of the wall nearest side to channel the electromagnetic signal emitted.
  • the background is square or rectangular, the antenna direction Y is parallel to the nearest face.
  • the antenna direction Y is tangent to the nearest face.
  • the antenna 8 is aligned in an antenna direction Y which is parallel or substantially parallel to the plane of the upper face of the bottom 3.
  • a trench 11 in the bottom 3.
  • the trench 11 is open on the bottom 3 of the tank 1 and it faces at least one antenna 8 perpendicular to the antenna direction Y and perpendicular to the first direction Z. It has been observed that in comparison with a tank 1 with a flat or substantially flat bottom 3, the formation of a trench 11 makes it possible to reduce the attenuation of the electromagnetic signal.
  • RFID tag 2 is outside trench 11.
  • the trench 11 has a depth in the bottom 3 which is at least equal to 10 mm and preferably at least equal to 40 mm. The depth is measured in the first direction Z. Preferably, the trench 11 sinks to a depth greater than the depth of insertion of the antenna 8 into the bottom 3 and even more preferably to a depth equal to the maximum penetration of the radome 10 into the bottom 3.
  • the width of the trench 11 is at least equal to 10 mm and preferably at least equal to 40 mm.
  • the section of trench 11 can have any shape.
  • the section of trench 11 is square, rectangular, semi-circular or semi-circular extended by a rectangle.
  • the antenna 8 is separated from the trench 11 by a thickness of concrete which is preferably between 10 mm and 40 mm.
  • the concrete thickness is at least 10 mm between the face of the trench 11 and the external wall of the radome 10.
  • the RFID tag 2 is placed in the bottom 3 of the concrete tank 1 between two trenches 11 in the direction perpendicular to the first direction Z and preferably perpendicular to the antenna direction Y. Both trenches 11 make it possible to indicate the position of the RFID tag 2 in the bottom 3 which avoids damaging the antenna 8 in a subsequent coring operation.
  • the RFID tag 2 can also be surrounded by an annular trench 11, of any shape, preferably circular, square or rectangular.
  • the trench 11 placed near the RFID tag 2 is a trench intended for the circulation of a fluid through the concrete tank.
  • the trench 11 is intended for the circulation of a liquid and the first and second opposite ends of the trench open onto two distinct through orifices in the side wall 4.
  • the side wall has two through holes in the extension of the trench which allows for a liquid to pass through the side wall 4.
  • the side wall 4 does not have a hole.
  • it is thinned to facilitate the formation of holes of the right size in the extension of the two ends of the trench 11.
  • the RFID tag 2 is arranged respectively at first and second distances from the first and second ends of the trench 11.
  • the first and second ends open into two distinct portions of the side wall 4.
  • the relationship between the first and second distances is between 0.8 and 1.2.
  • the RFID tag 2 is equidistant from the two ends of the trench 11.
  • the trench 11 is a rectilinear trench 11 extending from one edge to the other of the bottom 3.
  • the trench 11 is arranged in a central position.
  • the rectilinear trench 11 forms a diameter.
  • the antenna direction Y is parallel to the longitudinal direction of the trench 11 and the first distance is less than 40 mm, preferably between 5 mm and 40 mm, or even between 10 mm and 40 mm.
  • the bottom of the trench 11 has a plane of symmetry which passes through the center of the trench 11.
  • the RFID tag 2 is installed at a distance from the plane of symmetry.
  • trench 11 is, seen from above, curved.
  • the RFID tag 2 is placed in the concave part of the bottom 3 delimited by the trench 11, that is to say inside the curve.
  • the RFID tag 2 is placed near the trench 11, outside the trench 11.
  • the RFID tag 2 is arranged on the side of the trench 11 which has the center of curvature.
  • the trench 11 being curved, there is a direction tangent to the side edge of the trench 11.
  • the antenna direction Y is parallel to the direction tangent to the side edge of the trench 11.
  • the RFID tag 2 is distant from the tangent to the lateral edge of the trench 11 by the first distance by a distance less than 40 mm, preferably between 5 mm and 40 mm.
  • the bottom 3 of the concrete tank 1 comprises a plurality of trenches 11 which meet at one or more points. It is advantageous to place the RFID tag 2 near a junction point of two trenches. As with the previous embodiments, it is advantageous to orient the antenna of the RFID tag so that the antenna direction Y is parallel to the side wall of the nearest trench 11 or to be tangent to this side wall. It is preferable that the RFID tag is placed in the concave portion of the curvature or the equivalent curvature defined by the intersection of two trenches. It is preferable that the RFID tag 2 is placed as far as possible from the side wall 4.
  • a reading was carried out with good precision for a concrete tank 1 which has a height of 5 meters.
  • the distance between the RFID tag 2 and the reader 6 is thus at least 5 meters.
  • the concrete tank 1 is a tank for the flow of a liquid, for example rainwater or wastewater, it is common for the water to carry solid elements, for example sludge.
  • a layer of mud can be deposited on the upper surface of the bottom 3 of the concrete tank 1. This layer of mud generates an attenuation of the electromagnetic signal. It is therefore particularly advantageous for the upper surface of the bottom 3 of the concrete tank 1 to be inclined downwards from the side wall 4 towards the trench 11 so that the layer of mud slides into the bottom of the trench 11 and is carried by the liquid which circulates along trench 11.
  • the concrete tank 1 has a top opening opposite the bottom 3 which has a section whose dimension is less than the dimension of the bottom 3.
  • the bottom has a shape having central symmetry, for example a circular, square or rectangular bottom 3, it is advantageous that the center of the top opening is not aligned with the center of the bottom 3.
  • the installation of the RFID tag 2 in the bottom of the concrete tank 1 is particularly advantageous because this does not require significantly modifying the manufacturing process of the concrete tanks 1. More advantageously this does not require modifying the mold used to form the concrete tank 1.
  • the cost of manufacturing such a concrete tank 1 is substantially equivalent to that of a concrete tank 1 without the RFID tag 2.
  • the concrete tank 1 To make the concrete tank 1, at least one mold is provided, concrete not yet set, that is to say not yet solidified, that is to say in the liquid or pasty state, and a label RFID 2.
  • the RFID label is placed in the mold before pouring the concrete. Shims are placed in the mold to ensure that the label is in the correct position and with the correct orientation in the bottom of the tank.
  • the tank is made in at least two batches with a first casting step which forms part of the bottom.
  • the RFID tag 2 is placed on the concrete in the liquid state in the desired position.
  • the rest of the concrete is poured to form bottom 3.
  • the concrete is allowed to set.
  • a reservation is made in the bottom during the formation of the concrete tank 1.
  • the RFID tag 2 is placed in the reservation before being covered by concrete.
  • the cover has a second RFID tag 12.
  • the second RFID tag 12 is arranged closer to the surface of the ground. This makes it easy to detect the concrete tank 1 when the tank is buried.
  • the thickness of concrete of the tank and the cover 5 block the electromagnetic radiation in the direction of the RFID label 2 embedded in the bottom or placed projecting from the side wall 4. It is then important to use another RFID label 12 to ensure the location of the concrete tank embedded in the ground.
  • Reading the RFID tag 2 is carried out by providing a concrete tank 1 according to one of the previous configurations.
  • Cover 5 is open.
  • the RFID tag reader 6 is arranged facing the opening of the cover 5 and facing the bottom 3.
  • the RFID tag reader 6 emits an electromagnetic signal picked up by the tag RFID 2.
  • the latter emits an electromagnetic signal picked up by the RFID tag reader 6.
  • a second RFID tag 12 is placed in the cover 5.
  • the RFID tag reader 6 carries out a first interrogation which makes it possible to detect the position of the concrete tank. Then the cover 5 is opened and a second interrogation is carried out by the RFID tag reader 6 to read the information from the tag located at the bottom of the tank.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Claims (12)

  1. Betonwanne (1), umfassend:
    - einen Boden (3), der aus Beton hergestellt ist,
    - eine Seitenwand (4), die sich vom Boden (3) aus in einer ersten Richtung (Z) erstreckt, um einen Behälter zu bilden, wobei die Seitenwand (4) aus Beton hergestellt ist und sich vom Boden (3) aus auf einer Höhe von mindestens einem Meter erstreckt, wobei die Höhe in der ersten Richtung (Z) gemessen wird, wobei die erste Richtung (Z) im Wesentlichen senkrecht zum Boden (3) ist,
    - einen Verschlussdeckel (5), der durch die Seitenwand (4) vom Boden (3) getrennt ist und eine Öffnung definiert,
    - ein RFID-Etikett (2), das in einem flüssigkeitsdichten Radom (10) eingeschlossen ist, wobei das Radom (10) bündig mit dem Boden (3) montiert oder in den Boden (3) eingelassen ist, wobei das RFID-Etikett (2) mindestens eine Antenne (8) aufweist, die in einer Tiefe kleiner als 100 mm relativ zur Oberfläche des Bodens (3) angeordnet ist, wobei die Tiefe entlang der ersten Richtung (Z) gemessen wird;
    wobei der Boden (3) mindestens einen Graben (11) definiert, und wobei das RFID-Etikett (2) außerhalb des Grabens (11) liegt und von einem seitlichen Rand des Grabens (11) um einen ersten Abstand kleiner als 40 mm versetzt ist, wobei der Graben (11) eine Tiefe von mindestens 20 mm aufweist und ein erstes und ein zweites gegenüberliegendes Ende aufweist, oder wobei der Boden (3) senkrecht zur ersten Richtung (Z) flach oder im Wesentlichen flach ist.
  2. Betonwanne (1) nach Anspruch 1, wobei der Boden des Radoms (10) mit einer Metallschicht bedeckt ist, die einen Reflektor (10a) bildet, wobei der Reflektor (10a) durch die mindestens eine Antenne (8) von der Öffnung, die durch den Deckel (5) definiert wird, getrennt ist.
  3. Betonwanne (1) nach Anspruch 2, wobei die Antennenrichtung (Y) senkrecht zur ersten Richtung (Z) verläuft.
  4. Betonwanne (1) nach Anspruch 2, wobei das RFID-Etikett (2) eine symmetrische Antenne mit zwei planaren Strängen (8) umfasst, deren jeweilige Richtungen eine Antennenebene (AA) definieren, die senkrecht zur ersten Richtung (Z) verläuft.
  5. Betonwanne (1) nach einem der Ansprüche 1 bis 4, wobei der mindestens eine Graben (11) ein Graben ist, der für den Umlauf einer Flüssigkeit vorgesehen ist, und das erste und das zweite gegenüberliegende Ende in zwei separate Durchgangsöffnungen der Seitenwand (4) münden.
  6. Betonwanne nach dem vorherigen Anspruch, wobei das RFID-Etikett (2) jeweils in einem ersten und einem zweiten Abstand vom ersten und zweiten Ende des mindestens einen Grabens (11) angeordnet ist, wobei das erste und das zweite Ende in zwei separate Teile der Seitenwand (4) münden und das Verhältnis zwischen dem ersten und dem zweiten Abstand zwischen 0,8 und 1,2 beträgt.
  7. Betonwanne nach einem der Ansprüche 1 bis 6, wobei der mindestens eine Graben (11) ein geradliniger Graben ist, der sich von einem Rand des Bodens (3) zum anderen erstreckt, und wobei die Antennenrichtung (Y) parallel zur Längsrichtung des Grabens (11) verläuft, wobei der erste Abstand zwischen 5 mm und 40 mm beträgt.
  8. Betonwanne nach einem der Ansprüche 1 bis 6, wobei der mindestens eine Graben (11) gekrümmt ist, und wobei das RFID-Etikett (2) im konkaven Teil des mindestens einen Grabens (11) angeordnet ist.
  9. Betonwanne nach dem vorherigen Anspruch, wobei das RFID-Etikett (2) so ausgerichtet ist, dass die Richtung seiner Antenne (Y) parallel zu einer Tangente am seitlichen Rand des Grabens (11) ist, wobei der erste Abstand zwischen 5 mm und 40 mm beträgt.
  10. Betonwanne nach einem der Ansprüche 8 und 9, der von Anspruch 6 abhängig ist, wobei das RFID-Etikett (2) in gleichem Abstand zu beiden Enden des Grabens (11) angeordnet ist.
  11. Verfahren zum Lesen eines RFID-Etiketts (2), umfassend die folgenden Schritte:
    - Bereitstellen einer Betonwanne (1) nach einem der vorherigen Ansprüche und eines RFID-Etikett-Lesegeräts (6);
    - Lesen des RFID- Etiketts (2) mithilfe des RFID-Etikett-Lesegeräts (6), wobei das RFID-Etikett -Lesegerät (2) außerhalb der Betonwanne (1) der Öffnung des Deckels (5) und dem Boden (3) gegenüber angeordnet ist.
  12. Verfahren zur Herstellung einer Betonwanne (1) nach einem der Ansprüche 1 bis 10, umfassend die folgenden Schritte:
    - Bereitstellen einer Form, von Beton vor dem Abbinden und des im flüssigkeitsdichten Radom (10) eingeschlossenen RFID-Etiketts (2), wobei die Form einen Boden und eine Seitenwand (4) definiert, die sich vom Boden (3) in einer ersten Richtung (Z) erstreckt, wobei die Seitenwand (4) sich vom Boden (3) aus auf einer Höhe von mindestens einem Meter erstreckt, wobei die Höhe in der ersten Richtung (Z) gemessen wird und die erste Richtung (Z) im Wesentlichen senkrecht zum Boden (3) ist,
    Anordnen des Radoms (10) mit dem RFID-Etikett (2) in dem Teil der Form, der dazu bestimmt ist, den Boden (3) der Betonwanne zu definieren, während der Beton noch im flüssigen Zustand ist oder vor dem Gießen des Betons, wobei das Radom (10) bündig mit dem Boden (3) montiert oder in den Boden (3) eingelassen wird, wobei das RFID-Etikett (2) mindestens eine Antenne (8) aufweist, die in einer Tiefe kleiner als 100 mm relativ zur Oberfläche des Bodens (3) angeordnet ist, wobei die Tiefe entlang der ersten Richtung (Z) gemessen wird.
    - Abbinden lassen des Betons.
    wobei der Boden (3) mindestens einen Graben (11) definiert und das RFID-Etikett (2) außerhalb des Grabens (11) liegt und um einen ersten Abstand kleiner als 40 mm von einem seitlichen Rand des Grabens (11) versetzt ist, wobei der Graben (11) eine Tiefe von mindestens 20 mm aufweist und ein erstes und ein zweites gegenüberliegendes Ende aufweist, oder wobei der Boden (3) senkrecht zur ersten Richtung (Z) flach oder im Wesentlichen flach ist.
EP22204749.0A 2021-11-09 2022-10-31 Betonschacht mit rfid-etikett, verfahren zum lesen eines rfid-etiketts eines solchen behälters und verfahren zur herstellung eines solchen behälters Active EP4177410B1 (de)

Applications Claiming Priority (1)

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FR2111907A FR3128952B1 (fr) 2021-11-09 2021-11-09 Cuve en béton munie d’une étiquette rfid, procédé de lecture d’une étiquette rfid d’une telle cuve et procédé de fabrication d’une telle cuve

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EP4177410B1 true EP4177410B1 (de) 2024-07-31
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KR200437024Y1 (ko) 2006-12-28 2007-10-29 주식회사 셈즈 알에프아이디 태그가 내장된 안전맨홀
US7777628B2 (en) * 2007-09-14 2010-08-17 Tilson Jr Thomas M Radio frequency identification system and method for use in cast concrete components
JP5008201B2 (ja) 2008-05-21 2012-08-22 三智商事株式会社 無線ｉｃタグ
US8807873B2 (en) 2012-07-30 2014-08-19 Lmk Technologies, Llc Manhole liner having a wireless data transmitter
KR101331873B1 (ko) 2013-07-11 2013-11-21 주식회사 동이산업개발 Rfid 태그가 내장된 맨홀뚜껑
KR20200005205A (ko) 2018-07-06 2020-01-15 유한회사 글로리아 스마트 맨홀 관리시스템을 위한 맨홀 뚜껑의 rfid 태그 장착구조

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